Quenching tank



June z," 1931. F. T. COPE 1,808,160

QUENCHING TANK Filed Feb. s, 19:50 4 sheets-sheet 2 F. T. COPE QUENCHING TANK `lune 2, 1931.

Filed Feb. 6', 1930 4 Sheets-Sheet 5 i? Z Cape attoz nu,

June 2, 1931. F, T. coPE 1,808,160

QUENCHING TANK Filed Feb, 6, 1930 4 Sheets-Sheet 4 Patented Junfz. 1931 UNITED STATES- APjlrrEN'r oFr-'lcje Fiumi: T. corn, or pino, Assrenon To THE ELEcTnIo summon COMPANY, jor

^ sanar, omo, A CORPORATION or ome y anunciante. TANK Application med February 6.1930. serial No. 426,310.

tends from the bottom to the top of the tank,l

A`The invention relatesvto apparatus for qpenching material or 'articles' emerging om a heat treating furnace, and more particularly to means for cooling and circulating thev quenching fluid. A

The ob'ect-of the improvement is to provide an apparatus including a tank adapted to contain oil or other quenching fluid and provided with baie walls and a propeller for 10 continuously circulating the Huid through the tank in a predetermined path; an endless` chain belt or thev like being located through the tank and extendin upward out of the discharge end thereof or conveying articles or material to be quenched through the quenching iuid and discharging the same therefrom; means being provided for cooling or heating the Huid before the incoming het articles or material contact therewith.

An embodiment of the invention/is illus'- trated in the accompanying drawings, in which Figure l is a plan view of quenching apparatus;

Y Fig." 2, a vertical longitudinal section taken substantially on the line 2-2, Fig. 1; Fig. 3, a plan sectional view taken sub-` stantially on the line 33, Fig. 2;

Fig. 4, a transverse section on the line 4-4, Fig. 2;

Fig. 5, a transverse section on the .line- Fig. 6, .a longitudinal section on the 4line- 16, spaced from the outer side walls 10 and cx-Y tending from the bottom 12 to the top of' the tank, being joined at the charging end Yof the tank 'by the end' wall 17 which is spaced from the adjacent outer end wall' 11 and exthe improved being -braced` and strengthened as by the angle iron 18.

The baiiie walls 16 terminate at a point' spaced from the rear end wall 11, as indicated at 19,'and may be reinforced at their upper edges as bythe longitudinal angle irons 2Q and-the transverse channels 21.

. Thus thel baie' walls 16, 17 form an inner tank open at its discharge end, and its side and-'end walls form with the walls of the outer tank-a passagethrough which quenchin liquid maybe circulated. s

or the purpose of conveyingarticles ,I

vthrough the lquenching fluid, a chain 'belt or other form of perforate belt, indicated gener# ally at 22, is arranged to pass through thel liquid in the tank and to carry'the articles through the quenching bath and then out at the discharge end of the tank.V

This chain belt may be formed of links in l the manner Iillustrated in the drawings-or -rnay be of any other suitable structurewhich is perforate throughout in order to permit the quenching fluid to readily pass throughh the same; l, l

The structure -is preferably such as illustrated in the drawings in which links 23 areconnected together in staggered relation by means of the pins.24.provided.at their endswith rollers. 25 adapted to ride -upon the upper and lower rails 26 and 27 respectively, w

ch may be supported upon the baiiieside The chain belt is continuous and passes over the sprocket 28, located within the tank near the charging end thereof and over'the sprocket 29 mounted upon a shaft '30 jour- `naled in bearings asupported by the brack- 32nia-y be fixed upon the upright iianges 40 to retain the articles i' or material upon the chain and prevent its falling over the edges thereof. Inorder to prevent the material from being accidentally charged upon the outer edges of the chain, over the rollers 25, a depending, inclined guard plate 41 is fixed to each' bathe wall v-16 and terminates in the depending'lange 42 located just inside of the adjacent ianges 40V upon the chain.

Thus, as the materialltobe quenched is charged onto the inclined chute o'r plate 43, at the charging end of the apparatus, the same will be guided onto the chain between the flanges 40 and thuscannot be accidentally charged onto. the outer edge portions of the chain.

The guard plates 41A may extend a considerable distance along the chain, preferably extending for some distance around the u ward curve thereof and terminating at t 1e'4 top edge of the tank, as indicated at 44, in

.Figa 2, thus giving the material or articles sui`n`cient time to be properly leveled ofi' on the chain without danger of their being accidentally pushed over the upright flanges 40.

and onto the outer edges of the chain.

The inclined portion of the lower strand of the chain may be supported by therails 45 connected to the inner Asides of the baiiie walls 16 and plates 31a and supporting the chain from the -sprockets 29 to a point adjacent to the lower tracks 27.

A downwardly tapered trough 46 is located transversely through the quenching tank and extends from one bailie wall 16 to the other, between the upper and lower strands of the chain, being open on its. upper side and communicating at one end withan opening 47 in the adjacent baiile wall 16. f

A propeller 48 is located in the opening 47, being mounted upon ashaft 49 journaled in a. bearin shown generally at 50, supported in the a jacent side wall 10, the shaft extendingoutward through the bearing and being .connected to any suitable driving means for rotating the propeller in a direction to pum the oil or other quenching fluid through the opening 47 and trough 46, in thel direction o f .the arrows.in Figs. 2 and 5.

The only exit'for the'oil after it passes into the trough 46 isup through the perforate belt7 then 'rearward and again through the belt to the rear or discharge end .of the apparatus and around the ends of the baille walls 16, the

'lating the ,liquid between laround the terminations of the baille walls the direction of movement of the level being preferably substantially at the point indicated atL4 in the drawings.

As the belt travels up the inclined track t0- ward the discharge end of the apparatus, it

will be seen that the oil may ,freely pass through the same and return to the tank, as it drains from the articles which have been quenched. f

For the purpose of changing the tempera-y ture of the oil before it is returned, through the trough 46,to the interior of the baliie walls, coils 51-may be located between the baille walls 16 and the outer side walls l0, the loil which has been heated by contact with the articles passing around said coils as it returns to the trough 46 to be again brought into contact with incoming heated articles.

AEach coil may be provided with inlet and outlet pipes as indicated at 52 and 53 for the purpose of continuously circulating any suitor heating fluid through .thew

be all circulated through a central cooling or heating'apparatus and then back to the tank, the fluid rfrom a battery of tanks may tanks which would be constructed the same l as illustrated in the accompanying drawings, except for the omission of the coils therein.

I claim:

1. Quenching apparatus includin a tank, baliie Walls within the tank spaced om the side walls thereof andI terminating at a point spaced from the dischar e end of the tank, means for passing artic es to be uenched through the tank between the 'ba e walls, means for changing the temerature ofthe quenching liquid, and means or bodily circuthe baiiie walls,

and between the battle walls and side walls y and between the baiiie walls.

2. Quenching apparatus including a tank, a baiie wall within the tank spaced from the adjacent side wall thereof` and terminating at a point spaced from the discharge end of P the tank, means for passing articles to be quenched through the tank, means for changing'the temperature of, the quenchin liquid, and means for bodily circulating the 'quid in articles, around the termination of the baiile wall, between the bale wall and adjacent side wall and into' contact with the incoming articles. 3. Quenching apparatus including a. tank,

. asubstantially U-shaped baie wall within the tank spaced from the walls thereof, the open end, of the U terminating at a point spaced from the discharge end of the tank,

means for passing articles to bequenched A through the tank between the vbattle walls, a-

transverse trough extending between the baille walls at the entrance end of the tank 'below the pathof the articles, there being an opening inA one baiile wall communicating with the adjacent end of the trough, means for changing thetemperature vof the quench ing liquid and means for then circulating the liquid through said opening and into the trough. v

4.`Quenching apparatus including walls forming an outer tank having an inlet endv and a discharge end, walls forming an inner tank open at the discharge end and within'the outer' tank,llthe walls of the-inner tank being spaced from the walls ofthe Outer tankjto form acirculating passage for a quenching liquid between the tanks, the side Walls of the' inner tank terminating -at a point spaced from the discharge end of the outer tank, means for bodily `circulating quenching. liquid through the inner tank around the termination of its side walls into lthe circulating passage vand 'back into the inner tank at its entrance end`, and means in the circulating passage for. controlling the ,tank, means for -passing articles to be quenched through'the inner tank, separate means for bodily circulating quenching liquid through the inner tank around the termination of its sidewalls into the circulatv ing passage and back into the inner tank at 1ts entrance en d, and means in the circulating passage for controlling the ltemperature of the quenching liqu1d.

6. Quenching apparatus including walls of the articles and communicating with the circulating passage, separate means for circulating quenching liquid from the circulating passage through the trough into the inner tank, and means inthe circulating passage for -controlling the temperature of the quen ching liquid.

v''. Quenching apparatus including walls forming' an outer tank having an inlet end and a discharge end, Walls forming an inner tank open at the discharge end and Withf in the outer tank, the-walls of the inner tank being spaced from the walls of the outer tank to form a circulating passage for a quenching liquid between the tanks, the side walls of the inner tank terminating \at a point spac d from the discharge endof the cuter quenched through the inner tank, walls culating quenching liquid from the circulating passage through the trough into the inner tank, and means in the circulating passage for controlling the temperature of the quenching liquid.

In testimony that I claim the above, I

= have hereunto subscribed my name;

FRANK T. corn tank, and means for passing articles to be forming a transverse trough within the in-` ,-7 ner tank at its entranceend below lthe path of the articles, there being an `opening Aformed in one inner tank side wall comvmunicating with the adjacent end' of the trough, means adjacent the opening for cir' forming an outer tank having an inlet end and a dischargeend, walls forming an in ner tank open at the discharge end and within the outer tank, the walls' of the inner tank -1 being spaced from the walls of the outertank to form a circulatin' passage for a-quench- `ing liquid betweent e tanks, the side walls of the inner tank terminating at a'point space'dfrcm the discharge -end of the outer tank, means. for passing articles tof be uenched through the inner tank, walls orming a transverse trough within the in ner tank at its entrance end below thejpath 

